Publish design system docs

[kulmann]

Initial Checklist

• I understand this is a user story and questions should be posted in the Community Discussions
• I searched issues and couldn’t find anything (or linked relevant results below)

User Story

As an app/extension developer, I want to have a component reference easily available so that I can look up how to use certain components from the design system.

User Value

DX

Acceptance Criteria

• built vitepress based design system docs get deployed to a dedicated host (maybe design.opencloud.eu ?)
  • use github pages if possible
  • or do the same as for main docs
• deployed docs get updated on each pull request merge that touches the design system (src or docs)

[dragotin]

I am not so happy about github pages. Lets move that under https://docs.opencloud.eu as part of our official documentation.

[JammingBen]

CIs are in place now and the docs have been published under https://docs.opencloud.eu/design-system/.